/**
 *  uart.h - A serial driver sample for device driver framwork.
 *
 *  Copyright (C) 2008-2010 ZhangHu
 *  All rights reserved.
 *  E-MAIL: anmnmnly@gmail.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
#ifndef __UART_H__
#define __UART_H__

#include "include/buf.h"
#include "drivers/chdev.h"


typedef struct uart_type
{
    buf_t *prevbuf;
    buf_t *psndbuf;
} uart_t;


#define UART_PARITY_ODD 0
#define UART_PARITY_ENV 1
#define UART_PARITY_NONE 2

struct uart_mode {
    uint32 Baud;
    char_t DataLen;
    char_t StopLen;
    char_t Parity;
    char_t null;
};

enum UartCMD
{
    UART_CMD_RESET,    // reset uart port, and arg = NULL.
    UART_CMD_SETMODE   // set uart mode, and arg = uart_mode.
};


extern void uart_write(char_t value);


#endif

